102425128 has 32 divisors (see below), whose sum is σ = 207252360. Its totient is φ = 47174400.

The previous prime is 102425117. The next prime is 102425131. The reversal of 102425128 is 821524201.

It can be written as a sum of positive squares in 4 ways, for example, as 39413284 + 63011844 = 6278^2 + 7938^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78078 + ... + 79378.

Almost surely, 2^102425128 is an apocalyptic number.

It is an amenable number.

102425128 is an abundant number, since it is smaller than the sum of its proper divisors (104827232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102425128 is a wasteful number, since it uses less digits than its factorization.

102425128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077 (or 2073 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 102425128 is about 10120.5300256459. The cubic root of 102425128 is about 467.8811030664.

Adding to 102425128 its reverse (821524201), we get a palindrome (923949329).

The spelling of 102425128 in words is "one hundred two million, four hundred twenty-five thousand, one hundred twenty-eight".